slows the plane down
They are quite literally called flaps, and they make the plane go up, down, left and right.
You didn't specify what context you wanted. The term can be a noun or a verb and can mean several different things.The flag flaps in the breeze.The airplane's flaps were down.
Paper, because it is much lighter, and a foil airplane will take up much more mass.
about 12 seconds, if the paper airplane can fly it would stay up longer
No , a crumpled up airplane will have problems with the air not flowing smoothly across the wings .
The flaps on an airplane are there for two reasons: Drag and lift. As an airplane lines up with the runway and descends, it must slow down. Several things are done to slow down, such as throttle the engines down and lower the gear. However is some airplanes, to slow down and remain slow they must extend the flaps. These cause extra drag, which slows the airplane down. They are usually extended in increments while on approach. The second reason is for lift. As an airplane get slower, the wings get less and less effective, and once it gets slow enough, it may stall. To prevent a stall, airplanes lower flaps. These redirect air downward, pushing the airplane up. This allows it to fly slower, past its "clean" stall speed. (Clean stall speed refers to an airplane's stall speed with no flaps or landing gear extended) Some airplanes can fly nearly 100 knots slower with full flaps. The stall speed with full flaps and landing gear extended is known as "dirty" or "landing configuration" stall speed. This is much slower than "clean" stall speed.
catching air
you have to turn one flap up and the other one down to get your paper airplane to do a barell roll
it's because of the air that help the airplane goes up.
well, a pilot controls the airplane. ex. if he pulls back on the stick, it goes up. the control tower only tells him/her what altitude to fly at, if they are close to runway, etc. he can put down the gears, make the flaps and ailerons go up and down, all that stuff
Pushing in on the yoke will cause the nose to pitch down. Lowering the flaps will also cause the nose to pitch down.
Airplanes use a system of flaps to control their movements. Flaps are usually the back edges of a aircrafts wings that can angle up and down. It's like when you put your hand out a cars window while it is moving. You can control your hand by just angling your fingers differently. If you point them up the wind will push your hand up and back, and if you point them down the wind pushes your hand down. Planes do this too, they can point their flaps up or down and the wind will lift itup or force it downward. To turn they use the same thing, but instead of pointing the flaps on both wings up ordown they only use one wing. When you use just one side that side will lift up or drop down which tips the plane on a angle and then they can use their flaps to turn the plane just like they do for up and down. Planes also use a verticle flap on their tail which works the same way but it helps them with side to side movement and not up and down. You can do this with a paper airplane to get the idea a bit better. Simply make a paper airplane then bend the backs of the wings down or up and then throw it. The plane will then go up or down depending on which way you bent the wings. If you bend just one the plane will spin. P.S. sorry i couldn't use diagrams I couldn't find any that where apropperiate hopefully someone else can.